porsche



Aug, 13, 1929. PORSCHE 1,724,310

POWER DRIVEN VEHICLE Filed July 25, 1927 Jaw/21w.-

Patented Aug. 13, 1929.

hairs stains PATENT" QFHQE.

FEEDINAND PORSCHE, 013 STUTTGART-UNTER-TURKHEIM, GERIMANY, ASSIGNOR TODAIMLEE-BENZ AKTIENGESELLSCHAFT, O1 BERLIN, GERMANY, .A COMPANY OFGERMANY.

POWVER-DRIVEN VEHICLE.

Application filed July 25, 1927, Serial 1'70. 298,311, and in GermanyJuly 29, 1926.

This invention relates in general to power driven vehicles. Theinvention relates more particularly to the connection of two axles ofsuch a vehicle that are arranged close together and interconnected by ajointed coupling menihcr and each of which carries a pair of drivingwheels.

The object of the invention is to connect the one or two ax es to thevehicle frame in such a manner as to prevent an axle from turning roundan external center, :i. e. a center lying outside the axle itself.

To this end links ar 'anged in the form of a parallelogram are used toconnect the vehicle frame to the axle in question. In three-axlevehicles the front one of the two rear axles is connected by a linkparallelogram to the frame. The result ohtained by the invention is thatthe angle of detlea between the connecting shafts that join. the pair ofaxles by an intermediate joint or joints is reduced.

Vehicles with one driven rear axle are known in which turning movementsof the driving wheel axle around an external cente are prevented byconnecting the axle to the spring supported frame by means of a linkparallelogram.

The invention is illustrated by way of example in the three figures ofthe accompanying drawings.

Fig. 1 shows a vehicle frame according to the invention with the frontaxle sunken.

Fig. 2 shows the same frame with the front axle raised.

Fig. 3 is a plan view illustrating the arrangement of the thrust tubesof the vehicle frame.

The drawings illustrate the vehicle frame of a power-driven vehicle withthree axles, in which a motor, not shown, drives the change-speed gear1,. a transmission shaft supported in a thrust pipe 2 and anintermediate gear in a casing 3, the front axle i and the rear axle 7,the latter being driven through connecting shafts S and 9 and a joint 5.The trust pipe 2 is attached to the casing 3 by a joint 10, and moreoverties 12 are provided for supporting the casing, these ties forming, withthe thrust pipe 2, a parallelogram.

In this novel arrangement the axles 4E and 7 are also driven from thedriving shaft in the thrust pipe 2 by means of intermediate gears inthecasing and through theconnecting shafts 8 and 9 that'are coupledtogetherby a joint 5. Due to the spring links 14; and the joint 5 between theconnecting shafts the two axles at and 7 can accommodate themselves tothe unevennesses of thetrack without mutual interference. If the axle lsinks by the amount as into a depression the holding members that. holdthe axle at and that are arranged in the form of a parallelogram do notcause said axle to 6 round a center external to itself but the axle dropvertically or parallel elf. For all of the abovereasons an angle ofdeflection a between the connecting.

shafts 8 and 9 results which is much smaller ments, is not limited inits scope to the.

example shown in the drawing, but may be applied in other forms ofconstruction.

I claim In a power driven vehicle, a vehicle frame,

a plurality of driving axles arranged close together, members pivotallyconnecting the driving axles with one another, a drive shaft casinginterposed between the driving axles and the vehicle frame, universaljoints connecting the opposite extremities of the drive shaft casingwith the vehicle frame and front driving axle, a rod lyingsubstantially. parallel to the driveshaft casing, and means pivotallyconnecting the opposite extremities of the rod with the vehicle frameand front driving axle, said drive shaft casing and rod forming aparallelogram.

In testimony whereof I ailix my slgnature.

FERDINAND PORSCHE.

